Funding for this research was provided by:
Key R & D Program in Shandong Province (2016GSF201214)
Science and Technology Development Program of Shandong Province (2015GSF118110)
Received: 15 September 2020
Accepted: 11 November 2020
First Online: 9 January 2021
Ethics approval and consent to participate
: All experimental procedures were approved by Shandong Provincial Hospital Ethics Committee (No. 2014-022). All aspects of this study were conducted with adherence to the current version of the Declaration of Helsinki, the guidelines established by the International Conference on Harmonization of Good Clinical Practice, and the laws of China. All participants signed informed consent forms before enrollment.
: All participants signed informed consent forms for publication.
: The authors declare that they have no competing interests.